Mitogenomic insights into the population structure and demographic history of zig-zag eels (Mastacembelus armatus) in southern China
Understanding the genetic diversity and population structure of both wild and cultured fish populations is essential for developing effective conservation strategies and enhancing artificial breeding practices in aquaculture. Mastacembelus armatus (zig-zag eel) is an economically important fish spec...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Aquaculture Reports |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352513425001346 |
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| author | Yuanyuan Wang Yexin Yang Yi Liu Yuli Wu Haiyan Liang Aiguo Zhou Fangyu Cui Jintao Peng Zhiyong Jiang Xidong Mu |
| author_facet | Yuanyuan Wang Yexin Yang Yi Liu Yuli Wu Haiyan Liang Aiguo Zhou Fangyu Cui Jintao Peng Zhiyong Jiang Xidong Mu |
| author_sort | Yuanyuan Wang |
| collection | DOAJ |
| description | Understanding the genetic diversity and population structure of both wild and cultured fish populations is essential for developing effective conservation strategies and enhancing artificial breeding practices in aquaculture. Mastacembelus armatus (zig-zag eel) is an economically important fish species, yet some wild populations are facing declines, and large-scale artificial breeding remains challenging. To address this, we conducted a comprehensive analysis of genetic diversity and structure in wild and cultured populations. In this study, we sequenced and assembled the mitochondrial genomes of 98 wild and 90 cultured individuals. The results showed high genetic diversity in both wild and cultured populations and gene flow between them was detected. Significant genetic differentiation was observed among wild populations, primarily driven by river isolation. Conversely, genetic homogenization and low genetic differentiation were found within the Pearl River system. Phylogenetic analysis identified two main lineages, and demographic analyses revealed that lineage diversification occurred during the Pleistocene epoch, likely driven by habitat fragmentation caused by glacial retreats and fluctuating river systems. This study provides valuable genetic insights into the wild and cultured M. armatus populations in southern China, highlighting the need to preserve genetic differentiation in wild populations and addressing the genetic impact of escaped or released cultured individuals through improved management practices. |
| format | Article |
| id | doaj-art-efdb23e7a9cd4e809b438289cecb3039 |
| institution | OA Journals |
| issn | 2352-5134 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Aquaculture Reports |
| spelling | doaj-art-efdb23e7a9cd4e809b438289cecb30392025-08-20T02:05:19ZengElsevierAquaculture Reports2352-51342025-07-014210274810.1016/j.aqrep.2025.102748Mitogenomic insights into the population structure and demographic history of zig-zag eels (Mastacembelus armatus) in southern ChinaYuanyuan Wang0Yexin Yang1Yi Liu2Yuli Wu3Haiyan Liang4Aiguo Zhou5Fangyu Cui6Jintao Peng7Zhiyong Jiang8Xidong Mu9Key Laboratory of Prevention and Control for Aquatic Invasive Alien Species, Ministry of Agriculture and Rural Affairs, Guangdong Modern Recreational Fisheries Engineering Technology Center, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, ChinaKey Laboratory of Prevention and Control for Aquatic Invasive Alien Species, Ministry of Agriculture and Rural Affairs, Guangdong Modern Recreational Fisheries Engineering Technology Center, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, ChinaKey Laboratory of Prevention and Control for Aquatic Invasive Alien Species, Ministry of Agriculture and Rural Affairs, Guangdong Modern Recreational Fisheries Engineering Technology Center, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, ChinaAgro-Tech Extension Center of Guangdong Province, Guangzhou 510520, ChinaAgricultural and Rural Bureau of Zengcheng District, Guangzhou 511300, ChinaSouth China Agricultural University, Guangzhou 510642, ChinaKey Laboratory of Prevention and Control for Aquatic Invasive Alien Species, Ministry of Agriculture and Rural Affairs, Guangdong Modern Recreational Fisheries Engineering Technology Center, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, China; Shanghai Ocean University College of Fisheries and Life Science, Shanghai 201306, ChinaGuangzhou Heshenghui Agricultural Technology Co., Ltd., Guangzhou 511300, ChinaAgro-Tech Extension Center of Guangdong Province, Guangzhou 510520, China; Corresponding author.Key Laboratory of Prevention and Control for Aquatic Invasive Alien Species, Ministry of Agriculture and Rural Affairs, Guangdong Modern Recreational Fisheries Engineering Technology Center, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, China; Guangdong Provincial Key Laboratory of Aquatic Animal Immunology and Sustainable Aquaculture, Guangzhou 510380, China; Corresponding author at: Key Laboratory of Prevention and Control for Aquatic Invasive Alien Species, Ministry of Agriculture and Rural Affairs, Guangdong Modern Recreational Fisheries Engineering Technology Center, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, ChinaUnderstanding the genetic diversity and population structure of both wild and cultured fish populations is essential for developing effective conservation strategies and enhancing artificial breeding practices in aquaculture. Mastacembelus armatus (zig-zag eel) is an economically important fish species, yet some wild populations are facing declines, and large-scale artificial breeding remains challenging. To address this, we conducted a comprehensive analysis of genetic diversity and structure in wild and cultured populations. In this study, we sequenced and assembled the mitochondrial genomes of 98 wild and 90 cultured individuals. The results showed high genetic diversity in both wild and cultured populations and gene flow between them was detected. Significant genetic differentiation was observed among wild populations, primarily driven by river isolation. Conversely, genetic homogenization and low genetic differentiation were found within the Pearl River system. Phylogenetic analysis identified two main lineages, and demographic analyses revealed that lineage diversification occurred during the Pleistocene epoch, likely driven by habitat fragmentation caused by glacial retreats and fluctuating river systems. This study provides valuable genetic insights into the wild and cultured M. armatus populations in southern China, highlighting the need to preserve genetic differentiation in wild populations and addressing the genetic impact of escaped or released cultured individuals through improved management practices.http://www.sciencedirect.com/science/article/pii/S2352513425001346Genetic diversityPopulation structureMitogenomeGene flowMastacembelus armatus |
| spellingShingle | Yuanyuan Wang Yexin Yang Yi Liu Yuli Wu Haiyan Liang Aiguo Zhou Fangyu Cui Jintao Peng Zhiyong Jiang Xidong Mu Mitogenomic insights into the population structure and demographic history of zig-zag eels (Mastacembelus armatus) in southern China Aquaculture Reports Genetic diversity Population structure Mitogenome Gene flow Mastacembelus armatus |
| title | Mitogenomic insights into the population structure and demographic history of zig-zag eels (Mastacembelus armatus) in southern China |
| title_full | Mitogenomic insights into the population structure and demographic history of zig-zag eels (Mastacembelus armatus) in southern China |
| title_fullStr | Mitogenomic insights into the population structure and demographic history of zig-zag eels (Mastacembelus armatus) in southern China |
| title_full_unstemmed | Mitogenomic insights into the population structure and demographic history of zig-zag eels (Mastacembelus armatus) in southern China |
| title_short | Mitogenomic insights into the population structure and demographic history of zig-zag eels (Mastacembelus armatus) in southern China |
| title_sort | mitogenomic insights into the population structure and demographic history of zig zag eels mastacembelus armatus in southern china |
| topic | Genetic diversity Population structure Mitogenome Gene flow Mastacembelus armatus |
| url | http://www.sciencedirect.com/science/article/pii/S2352513425001346 |
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